Compact Charcoal Filter Cartridge with Flow Diffuser
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Solution Overview
Problem
Existing liquid filters, particularly those using charcoal cartridges, occupy excessive space due to their large size and complex housing designs, which are inefficient for filtering liquids in household and other applications.
Innovation Solution
A two-piece housing with inlet and outlet openings, a diffuser, and diverter plates optimizes liquid flow through a charcoal filter medium, ensuring even distribution and stabilization within a compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of stationary object
If a traditional filter cartridge design is used, then filtering function is provided, but the device occupies excessive space
Solution Approach 1:
The filter cartridge is divided into multiple functional sections: an upper housing with inlet, a lower housing with outlet, a diffuser section, and a filter medium section. This segmentation allows each component to be optimized for its specific function while collectively achieving compact dimensions. The diffuser is separated as a distinct element between the inlet and filter medium, enabling streamlined flow distribution without increasing overall cartridge volume.
Solution Approach 2:
The patent employs a vertically oriented cylindrical design where flow moves axially from top to bottom, maximizing the use of vertical space. The diffuser creates radial flow patterns that transition to axial flow through the filter medium, utilizing multiple flow dimensions within a compact cylindrical envelope. This dimensional optimization allows efficient filtration in a small footprint suitable for under-sink installations.
2Volume of stationary object
If a compact filter design is used, then space efficiency is improved, but uniform flow distribution becomes difficult to achieve
Solution Approach 1:
A diffuser element is introduced as an intermediary component between the inlet and the filter medium. This diffuser distributes the incoming liquid flow radially and uniformly across the filter medium surface, preventing channeling and ensuring even flow distribution. The diffuser acts as a flow-regulating intermediary that decouples the inlet positioning from the filter medium geometry, allowing compact design while maintaining flow uniformity.
Solution Approach 2:
The filter cartridge incorporates locally optimized features including a diffuser with specific hole patterns in critical flow distribution zones, and a filter medium with controlled porosity and thickness variations. The housing geometry is locally adapted with tapered sections and rounded transitions to promote uniform flow. These local quality enhancements ensure consistent filtration performance within the compact overall dimensions.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides a space-efficient and effective liquid filtration system that ensures uniform filtering and efficient use of space, suitable for various liquid handling devices.
Implementation Method 1
a charcoal filter medium located inside of the housing
Data Source
AI summary
A water filter cartridge (10) has a two-piece housing (14, 18) internally configured with inlet and outlet openings (12, 16), a diffuser (42), and a plurality of diverter plates (56, 32) to optimize liquid flow and to regulate even flow through a charcoal filter medium (40) located inside of the housing.